2007 Yamaha Apex Factory Service Manual, Page 35Get this manual

2007 Yamaha Apex Factory Service Manual, Page 35

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COMPRESSION PRESSURE MEASUREMENT CAUTION:

Same as without oil

Compression pressure (at sea level): Standard: 1,450 kPa (14.5 kgcm2, 206 psi) at 400 rmin Minimum: 1,260 kPa (1